About store
Storing JPA Entity Objects
Explains how to use JPA to store (persist) entity objects in the database.... Global Cascading Persist Batch Store Explicit Persist The following code stores ... unit definition (in persistence.xml ). Batch Store Storing a large number of entity objects requires special ...
CRUD Database Operations with JPA
Shows how to use Java/JPA to store, retrieve, update & delete.... a JPA connection to the object database, we can use it to store, retrieve, update and delete database objects. Storing New Entity ...
CRUD Operations with JPA
Explains how to use JPA for CRUD database operations (persist, retrieve, update, remove). The following subsections explain how to use JPA for CRUD database operations: Storing JPA Entity Objects Retrieving JPA Entity Objects Updating JPA Entity Objects Deleting JPA Entity Objects ...
Chapter 3 - Using JPA
Explains how to store, retrieve, update and delete entity objects using JPA. This chapter explains how to manage ObjectDB databases using the Java Persistence API (JPA). The first two pages introduce basic JPA interfaces and concepts: Database Connection using JPA Working with JPA Entity Objects ...
javax.jdo.spi.PersistenceCapable.ObjectIdFieldManager
This interface is a convenience interface that allows an instance to implement both ObjectIdFieldSupplier and ObjectIdFieldConsumer.(Interface of JDO)
Storing Images
What is the best way to store images? As external files? In the database as blobs? Are blobs supported?... What is the best way to store images? As external files? In the database as blobs? Are blobs ... 23:28 i use odb to store images, in a complex, persistent uml model based on Eclipse EMF/UML2. ...
javax.jdo.PersistenceManagerFactory
The PersistenceManagerFactory is the interface to use to obtain PersistenceManager instances.(Interface of JDO)
OneToMany and cascade delete problem
Hi, I don't really know if this is a bug or maybe model that I make is bad. I have a problem with with two different classes with OneToMany relation to one, shared class. For example (first class): @Entity public static class Store { @OneToMany(targetEntity = Offer.class, mappedBy = "store") private List<Offer> offers; } second class: ... @ Entity public static class Store { @ OneToMany ( targetEntity = Offer. class , mappedBy = "store" ) private List<Offer> offers ; } ...
Storing XML files in ObjectDB
Hello, Is it possible to store XML files in ObjectDB? Thanks ... Hello, Is it possible to store XML files in ObjectDB? Thanks ... ObjectDB can be used to store any type of data including XML. For example, you can define a ...
Class fields selection to store
In a class how do I define which are the fields to be stored? (using JDO API) It's using persistence-modifier="persistent" ? If I have a class with 40 fields and I only want to store one of the fields should I do the following? <class name="Car"> <field name="Wheels" persistence-modifier="persistent" /> </class> Which are the value used for fields that I do not want to store? ... If I have a class with 40 fields and I only want to store one of the fields should I do the following? <class name ... Which are the value used for fields that I do not want to store? Which are the value used as default? e.g <class ...
